7.1: Roots and Radical Expressions

Question 1

nth root

Answer 1

for any real numbers a and b, and any positive integer n, if a^n=b, then a

Question 2

radicand

Answer 2

number under the radical sign

Question 3

index

Answer 3

gives the degree of the root

Question 4

principal root

Answer 4

when a number has two real roots, the positive root